Merge branch 'nfp-concurrency'

Jakub Kicinski says:

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nfp: allow concurrency in core and minor fixes

The first 10 patches of this series prepare nfpcore for concurrent
accesses.  This will be needed by upcoming hwmon and devlink patches.
Most locking is already in place, the patches in this series iron out
a few bugs.

Last 5 patches are fixes and cleanups to the netdev code, including
removal of doorbell pointers used only on old versions of the chip,
removal of unnecessarily defensive code and flushing xmit_more more
carefully on error paths.
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Signed-off-by: David S. Miller <davem@davemloft.net>